There are alot of great caves in the US but there is a hot debate over which one is better Mammoth Cave or Carlsbad Caverns.

It's also a lot of fun to explore Carlsbad Caverns at your own leisure. I personally like to take photos, look around and read the interpretative display panels and just soak in the experience ...

The elevator system was first built in 1931 and has two sets of two cars: the 16-person primary elevators and the eight-person secondary elevators.